Libertarian presidential candidate Gary Johnson said “marijuana-related” traffic deaths, hospital visits and school suspensions in Colorado have “not significantly” increased since the state legalized the drug. That’s inaccurate.

This week, CNN’s Jake Tapper, with the help of FactCheck.org, fact-checks Democratic presidential candidate Hillary Clinton’s claim that “you can’t do any research about” marijuana because it’s a Schedule I drug. That’s false.